Relief shown by contours and spot heights.; "Surveyed in 1921 and 1939-1940."; "Topography in Indiana from chart of the Wabash River by Corps of Engineers, U.S. Army."; "Contour interval 10 feet."; Coordinates:...

Relief shown by contours and spot heights.; "Surveyed in 1914, 1916 and 1920."; "Surveyed in cooperation with the States of Kentucky and Illinois."; "Contour interval 20 feet."; Coordinates: (W 88⁰30ʹ00ʺ--W...